Actuator for a Circuit Breaker in a Switchgear

A circuit breaker, comprising:

• a line terminal;
• a load terminal;
• a ground terminal;
• an interruption assembly comprising an interrupter being adapted to selectively displace between each of, the line terminal, the load terminal and the ground terminal;
• and
• an actuator operatively coupled to the interruption assembly, the actuator comprising:
• a housing defined with a bore along a longitudinal axis of the housing;
• an actuating shaft movably positioned in the bore and extending along the longitudinal axis of the housing, the actuating shaft having at least one end that is connected to the interrupter for switching the circuit breaker selectively between an ON condition, an OFF condition, and an earth condition;
• at least one armature connected to the actuating shaft and being configured to displace within the bore;
• and
• at least three windings, each positioned in at least one slot of a plurality of through slots defined in the housing), wherein each of the at least three windings being configured to be selectively energized to displace the at least one armature.

A switchgear comprising,

• a low voltage compartment;
• a cable compartment;
• a load side power line;
• a line side power line;
• a circuit breaker compartment removably accommodating a circuit breaker connectable to the load side power line and the line side power line, the circuit breaker comprising:
• a line terminal engageable with the line side power line;
• a load terminal engageable with the load side power line;
• a ground terminal;
• an interruption assembly comprising an interrupter being adapted to selectively displaceable between each of the line terminal, the load terminal and the ground terminal to displace the circuit breaker between ON condition, OFF condition and earth condition, the interruption assembly defined within a vacuum chamber, the interruption assembly comprising a fixed contact module, and a movable contact module;
• and
• an actuator operatively associated with the circuit breaker, the actuator comprising:
• a housing defined with a bore along a longitudinal axis of the housing;
• an actuating shaft movably positioned in the bore and extending along the longitudinal axis of the housing, at least one end of the actuating shaft being connectable to the interrupter for switching the circuit breaker selectively between ON condition, OFF condition, and earth condition;
• and
• at least one armature connected to the actuating shaft and being configured to displace within the bore;
• and
• at least three windings, each positioned in at least one slot of a plurality of through slots defined in the housing, wherein each of the at least three windings is configured to be selectively energized to displace the at least one armature.